EP 0091699 A3 19860319 - IMPROVEMENT IN OR RELATING TO APPARATUS FOR FORMING A SEAL ON A CLOSURE AND TO A CLOSURE HAVING A SEAL FORMED FROM A FOAMED ADHESIVE MATERIAL

Title (en)

IMPROVEMENT IN OR RELATING TO APPARATUS FOR FORMING A SEAL ON A CLOSURE AND TO A CLOSURE HAVING A SEAL FORMED FROM A FOAMED ADHESIVE MATERIAL

Publication

EP 0091699 A3 19860319 (EN)

Application

EP 83104261 A 19801217

Priority

EP 83104261 A 19801217
US 10150279 A 19791221

Abstract (en)

[origin: EP0091699A2] Improvements in or relating to apparatus for forming a seal on a closure and to a closure having a seal formed from foamed adhesive material. Such an apparatus comprises means (12) for dispensing thermoplastic adhesive material onto the closure (14) as a foamed layer, means (13) for maintaining the foamed layer as a foam to form a seal (40) and means (19) for mixing the adhesive material with a gas to form a mixture which on dispensing evolves gas to form the foam. Such a closure (14) has a seal (40) formed from an adhesive foam, the foam being obtained by mixing thermoplastic adhesive material with a gas and dispensing the mixture onto the interior surface (37) of the closure (14) the mixture evolving gas to form the adhesive foam. The seal (40) formed has greater resilience and requires less material than a seal made of the same material in an unfoamed condition. The sealing material on the closure also requires no heating in order to be cured.

IPC 1-7

B21D 51/46

IPC 8 full level

B05B 7/26 (2006.01); B05C 5/02 (2006.01); B21D 51/46 (2006.01); B29C 31/04 (2006.01); B29C 70/80 (2006.01)

CPC (source: EP)

B05B 7/262 (2013.01); B05C 5/0216 (2013.01); B05C 5/0225 (2013.01); B21D 51/46 (2013.01); B29C 31/047 (2013.01); B29C 70/80 (2013.01); B29C 43/18 (2013.01); B29C 43/34 (2013.01); B29C 2043/3433 (2013.01); B29L 2031/7096 (2013.01)

Citation (search report)

[YD] US 4059714 A 19771122 - SCHOLL CHARLES H, et al
[Y] US 3261895 A 19660719 - STRICKMAN SAMUEL W
[YD] GB 838200 A 19600622 - GRACE W R & CO
[A] US 4156754 A 19790529 - COBBS WALTER H JR [US], et al
[A] US 3343211 A 19670926 - STRICKMAN SAMUEL W
[A] GB 1516834 A 19780705 - DALE LTD J
[A] US 3774560 A 19731127 - HARTZ T
[A] US 3788561 A 19740129 - VILAGI B, et al
[A] US 3819403 A 19740625 - HOGSTROM E
[A] US 3873258 A 19750325 - RATLIFF FLOYD A

Designated contracting state (EPC)

BE CH DE FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0091699 A2 19831019; EP 0091699 A3 19860319

DOCDB simple family (application)

EP 83104261 A 19801217